Improvement in molds for making glass ware



nach sicattmt @im Letters-Patent No."110,056, dated December 13,1870.

The Schedule referred to in these Letters Patent and making part vof the same.

" IMPnQVEMENT IN MoLns. Fon MAKING GLASS WARE.

To all whom it may concern.-

Be a known that I, JAMES B, -L-Yomoftne city 0flittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Molds for Making Glass Ware; and I do hereby declare the followingto be a full, clear, and ex- 'act description thereof, reference being had to the :1ecompanying drawing making a part ot' this specification, in which Figure lis a perspective view of my improved glass.'

'mold. when closed, and

VFigure 2 is a sectional view of the same, showing the-operative parts and their position when the mold is open.

' Like letters of referenceindcate like parts in each.

Heretofore-'two-part molds forthe manufacture of glass ware have been connected together by a hinge, but the objection to this sort of connection is. that the join-t hetaveenthe two parts cannot be made tight`V enough to prevent alarge iin being formed on the ar`-,

ticle pressed.

' 1 lo enableothers skilled in the art to make and-use inode of operation.

On abcd-plate, a., between two side pieces or ways, b, I .place asliding frame, c, which carries at its back cndone-half, :1, ot' a-two-part mold.-

my invention, I will describe-its construction and The other or forward end vof the frame c carries an eccentric shaft, e, which 'is secured in place by when in motion, against ayoke, h, said yoke being fastened to the torward half 'df-ot' the two-part mold.

Ihe eccentric g is operatedby ac'rank, which is placed on the end c of the shaft e, and works against the face of the forward halt' d of the two-part mold, and against the yoke h.

Ihc parts of the mold-are guided and steadied in tlieinforward and back' motion bya tougne-andgroove joint'in one side-of the sliding frarne c, the groove It' being in the frame and the'tongue inthe lside of the partd.

The operation is as follows:

The mold, being shut as shown in Iig. l, the glass to bc pressed is placed in the cavity. A plunger` vof `the desired shape then descends into the mold, and: '.lhen the Inold is opened by applying power to the cam-shaft c, the ec-I centric y operating against the y'okeh, drawing the l presses. the glass into. shape.

part d forward untilit encounters the peg or stop t', tig. 2. VSince the part d' cannotanlvance further forward, the eccentric y, still operating againstthe -yoke 7i., pushes back the sliding trame, which carries back with it the part da distance equal to the distance the part d advanced. Lhe niold is then open, (see tig. 2,) and the article -of glass-warev may berernoverh.-

To close the mold the operation 4described is reversed.

Just at the poiutivhere the two parts of the inold come togethcrthe eccentric g. presses againsttbcth, the part d and the yoke h, and holds the two parts. tightly together. v

rIhe mold shown is for forming a goblet.- In the cavity l the bowl is formed; the stem is formed in the long cavity on, and the top of the foot 'in the cavity u.' Shape is given to the lower or under` face of the foot by the foot-die o.

My invention can be applied to the manufacture of all articles ot pressed glass-ware which have heretofore been made in two-part molds ot' the ordinary description.

Ihe stop Ii is placed atv a distance from the point where the two parts, (l and d', meet, equal to onehalt' the throw of the eccentric g.

In the manufacture of some articles it is desirable tohaveone ot' the .parts of thev mold stationary and the other'operating against it. Thismay be accoui- Y plished by tightly securing one part to the bottomv plate, and by making the eccentric to operate in connection with the other.

I do not limit lnysel/t Yto the inannier shown of operating the mold. Instead of the eccentric any .otherv equivalent or known way imparting a re''ciprocating :motion may bensed. v l

What I claim as my invention,` and desire to secure by Letters Patent, 'is-f" l v1.- A two-part mold forpressing glass ware,in which the two' halves of the mold are arranged on sliding Y ways, o r a' b ed or 'plat-form, and in opening' and closing are caused tomove directly to or from each other in straight lilies. f

2. An eccentlo-'and yoke arranged in connection with cach or either half of a two-part glass-rnold, whereby such half ofi the mold shall be caused to open and close on the other halt'.

3. A sliding frame, carrying at one end one-half of a two part mold, and at 'theother end aneccentric shaft, whichecccntric is arranged,'i nconnection'with the other half of the mold, to open and close both.

4. lhe arrangement of an eccentric or cam, operative against one-half of a two-part rnold, with connections therefrom to the opposite half', for the purpose ot' holding the two well together when the pressing is being. done. Iii-testimony whereof, I, the said 'JAMES B. LYON, have'hereunto set my hand.

JAMES '13. LYON.

Witnesses:

A. S.,N1oHoLsoN, G. H. CHRISTY. 

